Just when we’d gotten used to the idea of square watermelons and bonsai kittens comes the latest in plant-life modification: fruit grown in the shape of a juice box.

It’s the masterstroke of a recent ad campaign for Brazilian juice company Camp Nectar, thought up by the creative agency AGE Isobar as a way to highlight the fact that the company’s juice is all natural.

AGE Isobar built plastic molds in the shape of juice boxes and placed them over budding fruit. The fruit would then fill in the mold as it grew. After two years of trial-and-error experimentation, they were able to create lemons, guavas, passion fruit, papayas, apples and oranges in the shape of Camp Nectar’s signature juice box — complete with an embossed logo in the center and the outline of a bendy straw on the back. Check out the time-lapse video to see the process.

The 1,123 fruit creations were displayed in the produce section of supermarkets, nestled among actual fruit — but sadly aren’t available for sale, according to The Stir. Which is really too bad.